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How to Update the Default Plesk SSL (not domain ssl)

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You can update the SSL through Plesk under Tools & Settings -> SSL/TLS Certificates. To change the default Plesk certificate and do not reassign certificates for all domains manually, do the following: In Plesk open Tools & Settings > SSL/TLS Certificates > Add > proceed with adding new certificate. Return to Tools & Settings > … Read more

Office 365 Anti-Spam IP Delist Portal

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If you’re trying to send mail to an Office 365 recipient and the mail has been rejected because of your sending IP address, follow these steps to submit a delisting request. Error messages may be similar to the following: ECDHE-RSA-AES256-SHA384:256 CV=yes: SMTP error from remote mail server after RCPT TO:: 550 5.7.606 Access denied, banned … Read more

Generate ssh keys on linux and use with PuTTY on Windows

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Log into the Linux server as the user you are going to use to connect with ssh. Generate the key.

ssh-keygen -t rsa -b 4096 -C "email@domain.com"
Generating public/private rsa key pair.
Enter file in which to save the key (/home/user/.ssh/id_rsa): 
Enter passphrase (empty for no passphrase): 
Enter same passphrase again: 
Your identification has been saved in /home/user/.ssh/id_rsa.
Your public key has been saved in /home/user/.ssh/id_rsa.pub.
The key fingerprint is:
SHA256:3/dDa9R+zzDpGNt/EU9Jusj/snbKt3+B8F+ULnxXtWk email@domain.com
The key's randomart image is:
+---[RSA 4096]----+
|                 |
|               ..|
|              o *|
|           . . E+|
|        S . = =o=|
|         . + * O=|
|          . + @.*|
|            .@ %=|
|            ++@+#|
+----[SHA256]-----+

Now copy the id_rsa key to your Windows desktop. This can be done by copying and pasting the contents of the file or using an SCP client such as PSCP which is supplied with the PuTTY install or FileZilla.

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Disable ONLY_FULL_GROUP_BY in Mysql on Ubuntu 16

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Recently I ran a command in mysql that resulted in this error: mysql: [ERROR] unknown variable 'sql_mode=IGNORE_SPACE,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION' So I had to add a line to the mysql config file. In Ubuntu 16: # nano /etc/mysql/mysql.conf.d/mysqld.cnf Add the following line under mysqld [mysqld] sql_mode = "STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION" Restart mysql: # systemctl restart mysql

Replace PHP 5.4 with 5.6 in CentOS 7.x

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How to replace php 5.4 with php 5.6. Before installing PHP 5.6, apply any existing updates available for your distribution: # yum check-update # yum update Also, this is a good moment to get (and save somewhere) a list of our installed packages (in case we need to rollback): # rpm -qa |grep php php-mbstring-5.4.16-36.1.el7_2.1.x86_64 … Read more

Stress Test CentOS with Stress

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First, you need to download the file using Wget and then install it using RPM on your system to enable the EPEL repository. RHEL/CentOS 7 64 Bit # wget http://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm # rpm -ivh epel-release-latest-7.noarch.rpm ## RHEL/CentOS 6 64-Bit ## # wget http://dl.fedoraproject.org/pub/epel/6/x86_64/epel-release-6-8.noarch.rpm # rpm -ivh epel-release-6-8.noarch.rpm Check the installation # yum repolist *epel/x86_64 Extra Packages … Read more

Set up Sendgrid on Plesk

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This is used to set up Sendgrid in Plesk for Azure email functionality. Set up a sendgrid account and set up the first email:  Ssh to the Azure server and make the following modifications: Find your Postfix config file, typically /etc/postfix/main.cf, and add the following: smtp_sasl_auth_enable = yes smtp_sasl_password_maps = hash:/etc/postfix/sasl_passwd smtp_sasl_security_options = noanonymous smtp_sasl_tls_security_options … Read more

Check CPU Type

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Here is how to check the CPU type in CentOS: # dmidecode –type processor Output: # dmidecode 2.12 SMBIOS 2.7 present. Handle 0x0004, DMI type 4, 42 bytes Processor Information Socket Designation: CPU 1 Type: Central Processor Family: Xeon Manufacturer: Intel ID: D7 06 02 00 FF FB EB BF Signature: Type 0, Family 6, … Read more